Endoscopic ultrasound-guided fine-needle aspiration/biopsy (EUS-FNA/FNB) is very safe and has a high diagnostic rate for upper gastrointestinal lesions. especially pancreatic lesions. but its application in the lower gastrointestinal tract has rarely been reported. Due to the tortuous course of the colorectum. https://medicalwarehouses.shop/product-category/walkers-rollators/